Device for the taking-up shaft of flat hosiery frames



Sept. 20, 1932. K. w. 'LIEBERKNECHT DEVICE FQR THE TAKING-UP SHAFT OF FLAT HOSIERY FRAMES Filed June 11. 1931 /nvnton' K AQMM Patented Sept. 20, 1932 PATENT OFFICE KABL- W'ILLI LIEBERK'NECHT, F OBERLUNGWITZ, -GERMANY DEVICE FOR THE TAKING-UP SHAFT 0F FLAT HOSIERY Application filed June -11, 1981, Serial No. 548,849, and in Germany June 18, 1 980;

teeth at each of the required periods. In this drive however. the toothed wheel and rack were subject to heavy wear, as the teeth slide the one over the other during the. return movement. The rotary movement of the taking up shaft is also. irregular in the different pushes, as it is dependent upon the position of the pitch of the toothed wheel relative to the enga 'ng point of the push rod.

Theo ject of the invention is, to render the drive for the taking up shaft asae'gular as possible and particularlysoft so as to redues to a minimum the wear of the parts moving one over the other. This is attained according to the invention in that, for eriodically removing the tension in the fa ric, a control lever exerts a blocking, and locking effect on the taking up shaft by means of a friction locking device, and this shaft-is subsequently rotated in the direction opposite to the direction of rotation caused by the taking up weights. v i

An embodimentof the invention. is illusing drawing in which:

Fig. 1 shows the gearing in side elevation, v Fig. 2 being a part top plan view of Fig. 1. The taking up shaft is designatedxby 1. It

carries a disc 2 keyed thereon and a lever 3' loosely mounted beside the disc 2, an eccen-' -end 9, whereas the other end' is linked by ,trated' by way of eic'ample inthe accompanymeans ofa pin 10 to a two-armed lever 12, oscillatably mounted on a pivot 11.

The lower end of the two-armed lever 12, acted upon by a spring 13, carries on a transverse pin 14 a pressure roller 15 which runs on t e circumference of a cam disc 17 keyed on a haft 16. Y

O the shaft 1 a rope pulley 18 is keyed in kno n manner at the side of the disc 2. A

pull rope 19, loaded by a weight 20, runs over this pulley 18 and over a guide pulley 21.

The operation is as follows:

If the lever 3 is lifted out of its normal position by the protuberance 17 of the cam disc 17 through the intermediary of the thrust rod 8, the roller 5 wedges between the; disc 2 and the cam 4: and, through theinter-- mediary of the blocked pulley 5, rotates the shaft 1 in opposition to the action of the weight 20.

If the thrust rod 8 together with the lever 3 returns into its initial position, the block'- ing of the disc 2 ceasesand the roller 5, which may evidently be replaced by some other friction element, slides or runs on the disc 2 without any effect. If the roller 5 rests on the stationary stop 6, the shaft 7 is under the action of the taking up weight as before. It isadvisableto provide a second stationary stop 22 for supporting the lever? so that the'trust rod 8 can descend independently a greater distance and become absolutely free so as to enable same to be swung out, if desired.

I claim:

1. A flat hosiery frame in conjunction with a driving mechanism for the taking up shaft for the fabric, comprising in combination with'the taking up shaft, a pulley keyed on said taking up shaft, a weight loaded pull rope co'nnectedto saidpulley adapted to turn said shaft to put the fabric under tension, 9.. disc keyed on said shaft, .a lever loosely mounted on said shaft, a projection on the .innerside of said lever' having aninclined cam surface bearing against-said disc, a pin 95.

on the outer side'of said lever, and means engaging said lever adapted to block said driving Shaft.

-2. On a flat hosiery-friame the arran ement of a driving mechanism for the taking/ up loo shaft for the-fabric, comprising in combination with the taking up shaft, a pulley keyed on said shaft, a weighted pull rope connected to said pulley adapted to turn said shaft to 5 put the fabric under tension, a disc keyed on said shaft, a lever loosely mounted on said shaft, a rigid projection on the inner side of said lever having a cam surface inclined relative to said disc, a blocking element for said 1 shaft resting loosely against said disc and said cam surface, a pin rigidly mounted on the outer side of said lever, a. thrust rod cooperating with said pin, a rod system connected to said thrust rod, a' cam acting on said 15 rod system adapted to control said thrust rod to lift said thrust rod and rotate said takin 1p shaft against the action of said weighted pull rope, and rigid supiorting abutments for said leverand said bloc 'ng element.

20 In testimony whereof I aifix my signature.

' KARL WILLI LIEBERKNEGHT. 

